_cpwsgiserver.py should coerce response header values to strings
While using _cpwsgiserver.py with my pylons WSGI application I am getting an exception raised at http://www.cherrypy.org/browser/trunk/cherrypy/_cpwsgiserver.py#L326 stating "TypeError: cannot concatenate 'str' and 'int' objects" because my Content-Length response header is an int.
I looked in the WSGI PEP and couldn't find a requirement that header values be strings and I did a quick survey of several WSGI apps and they all seem to use an int for the Content-Length header; so I think the response header values should be automatically coerced to strings in _cpwsgiserver.
I've only been using _cpwsgiserver for a total of 30 minutes so hopefully I'm not missing something obvious.
Wes Augur email@example.com
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